- Aug 6 Joseph Wirth, 5th Chancellor of the Weimar Republic, Germany (Stalin Peace Prize), born in Freiburg im Breisgau, German Empire (d. 1956)
- Aug 7 Johannes Kotze, South African cricket fast bowler (1902-07), born in Berg River, Cape Colony (d. 1931)
- Aug 8 Emiliano Zapata, Mexican revolutionary, peasant leader
- Aug 8 "Dr. Bob" Smith, American physician and co-founder of Alcoholics Anonymous, born in St. Johnsbury, Vermont (d. 1950)
- Aug 13 John Ireland, English composer and pianist (Mai-Dun), born in Bowdon, Cheshire, England (d. 1962)
- Aug 15 Ethel Barrymore [Blythe], American classic film & stage actress (Constant Wife, Corn is Green), born in Philadelphia, Pennsylvania (d. 1959)
- Aug 18 Aleksandr Rodzyanko, Russian lieutenant-general and corps commander of the White Army during the Russian Civil War, born in Russia (d. 1970)
- Aug 21 Henry Ainley, English actor (As You Like It), born in Morley, West Yorkshire, England (d. 1945)
Claude Grahame-White
Aug 21 Claude Grahame-White, English aviation pioneer who was the 1st to make a night flight, born in Bursledon, England (d. 1959)
Claude Grahame-White
- Aug 23 Alfrēds Kalniņš, Latvian composer, born in Cēsis, Russian Empire (d. 1951)
- Aug 24 Rentaro Taki, Japanese pianist and composer, born in Tokyo (d. 1903)
- Aug 26 Joe Jeannette, American boxer (world coloured champion 1909), born in West Hoboken, New Jersey (d. 1958)
- Aug 31 Yoshihito [Taishō], 123rd Emperor of Japan (1912-26), born in Akasaka Palace, Tokyo City, Japan (d. 1926)
- Aug 31 Viktor Alexandrovich Uspensky, composer
- Aug 31 Alma Mahler, Viennese composer and Wife of Gustav Mahler, Walter Gropius and Franz Werfel, born in Vienna, Austria (d. 1964)